Hi Gianluca

The service provider didn't document which mode I should use when subscribing to their Orders stream, I found a forum entry that said I could use DISTINCT, or RAW, and unlucky as I was I picked DISTINCT.
Strangely enough DISTINCT worked about 80% of the time with LS5 and LS6-b2, but not the final LS6. After I got a running example from the service provider I noticed that they used RAW, and after I made that adjustment it worked fine.
I'm a little puzzled about the 20% periodic failure rate, but I'm thinking it's related to some implementation detail in the service provider, and they probably never tested it or planed it to work with DISTINCT mode.

Thanks again, for taking time to look at this.

/Klaus